You can make up your own or have your students create some!
One that I have created is for factoring sum or difference of two cubes.
x^3+y^3 = (x+y)
then, we SOPPS the binomial to get the trinomial factor. S(quare) O(pposite
sign) P(roduct) P(lus) S(quare)
(x+y)(x^2 - xy + y^2)
I will let you know if I remember any more.
-Claudia, for the Teacher2Teacher service